Name: Daisy I Reno, Nv (Zone 6b) Not all who wander are lost
Its a lichen. You must be in a high humidity area and that is the shady side of the tree. It won't hurt the tree - I always thought getting lichen growing on your trees was very cool.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost
President: Orchid Society of Northern Nevada
Webmaster: osnnv.org
Name: Daisy I Reno, Nv (Zone 6b) Not all who wander are lost
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost
President: Orchid Society of Northern Nevada
Webmaster: osnnv.org